Function loaderFactory

docs/app/js/sanddance-app.js:108928–108937

* Factory for a loader constructor that provides methods for requesting * files from either the network or disk, and for sanitizing request URIs. * @param {function} fetch - The Fetch API for HTTP network requests. * If null or undefined, HTTP loading will be disabled. * @param {object} fs - T

(fetch, fs)

 *   param {object} [options] - Optional default loading options to use.
 *   return {object} - A new loader instance.
 */ function loaderFactory(fetch, fs) {
    return (options)=>({
            options: options || {},
            sanitize: sanitize,
            load: load,
            fileAccess: !!fs,
            file: fileLoader(fs),
            http: httpLoader(fetch)
        });
}
/**
 * Load an external resource, typically either from the web or from the local
 * filesystem. This function uses {@link sanitize} to first sanitize the uri,